Chromatography

Multicolumn Chromatography

Downstream processing is a sequence of unit process operations that purify biopharmaceuticals and prepare them primarily for bulk formulation (Figure 1). Typically, a large volume (hundreds to thousands of liters containing kilograms of therapeutic protein) is delivered from an upstream fermentation or cell culture process — and this ends up as a small volume (a few liters) of purified concentrate product after processing. Figure 1: () For many years, biopharmaceutical manufacturers have been working to increase capacity, address upstream production…

Proactive Debottlenecking

It wasn’t so long ago that people in the biotherapeutics industry talked about a “capacity bottleneck” to describe the difficulty faced by bioprocessors as their many products moved forth through development to require production at larger and larger scales (1). Expression technologies at the time were making proteins at levels suggesting that huge amounts of manufacturing capacity would be needed soon. Just after the turn of the century, product titers (in terms of protein present per liter of culture broth/supernatant)…

Austria Welcomes BioProcessors

When it comes to agriculture, the people of Austria are among the most dead-set against so-called “genetically modified organisms” of any population in Europe (1). But as is so often the case elsewhere, their attitude toward biotechnology used in medicine is much more friendly. This may have to do with the country’s traditional strength in environmental biotech (ranging from wastewater treatment and organic waste composting to anaerobic digestion for biogas generation) and also food biotechnology. That is the suggestion of…